Corrosion inhibition of particulate and tubular polyaniline in polyvinyl butyral for mild steel protection

Rahman, Fariza Abdul and Basirun, Wan Jefrey and Johan, Mohd Rafie and Ghazali, Nadiah (2023) Corrosion inhibition of particulate and tubular polyaniline in polyvinyl butyral for mild steel protection. Materials Letters, 336. ISSN 0167-577X, DOI https://doi.org/10.1016/j.matlet.2023.133898.

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Abstract

Currently available anticorrosion additives for metals consist of chromates that present safety concerns due to their toxicity. Thereby, this study investigated an environmentally friendly substitute coating additive of particulate and tubular polyaniline (PANI) in the polyvinyl butyral (PVB) coating. The PANIs were analysed by TEM, FT-IR and BET surface area analysis. Electrochemical impedance spectroscopy (EIS) and Tafel polarisation analyses were conducted to evaluate the coating performance in 3.5 wt% NaCl solution for 30 days. The higher surface area of tubular PANI successfully inhibits the corrosion of mild steel by having the lowest corrosion rate at (5.730 +/- 0.819) x 10-4 mm/year compared to particulate PANI as an anticorrosion additive in the PVB coating.

Item Type: Article
Funders: UNSPECIFIED
Uncontrolled Keywords: Coating; Corrosion; Electrochemistry; Polyaniline
Subjects: Q Science > QC Physics
Divisions: Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre
Depositing User: Ms Zaharah Ramly
Date Deposited: 22 Nov 2023 06:59
Last Modified: 22 Nov 2023 06:59
URI: http://eprints.um.edu.my/id/eprint/38774

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